Radio / Amplifier

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The crossfire is fitted with a Becker radio, based on the Becker DTM High Speed (BE 6806 (non-NAV) / 6811 (NAV) / ZH 29) . The speakers on the non-Base models are powered by an additional Infinity Amplifier.

Radio

The radio itself seems to be based on the Becker Monza, and has all 3 connectors (A, B, C), although connector C is not used. Another spot for a MOST/D2B (Mercedes) connection can be found, but no fiber optics are installed.

Some models do seem to include a MOST/D2B connection, as shown below.

MOST/D2B connection cap


The NAV model has an additional C/C button, that is used for the CD Changer, a function that was never shipped with the crossfire. You can find documentation about the CD changer and installation here : https://www.crossfireforum.org/forum/audio-video-electronics/10953-cd-changer-nav-receivers.html .

A Becker radio without NAV option


The backside of the Becker radio


Part numbers

The Becker "ZH 29" type might refer to the Chrysler naming of the Coupe model, ZH29.

Mercedes P/N Notes
A 193 820 00 86 Seems to have been first iteration, which includes ones with an inverted screen.

Serials that have the inverted screen include: 35006768

Also came with a MOST protection cap

A 193 820 03 86
A 193 820 04 86



Amplifier

Wiring


"Power Amplifier A"
1 Blue

Right Door Speaker -

2 Blue / Brown

Left Door Speaker +

3 Blue / Brown

Left Door Speaker +

- - 4 Brown

Ground

5 Blue / Dark Green

Enable signal to Amplifier

6 Yellow / Violet

Left Rear Speaker +

7 Yellow

Right Rear Speaker -

8 Blue

Right Door Speaker -

9 Yellow / Violet

Left Rear Speaker +

10 Yellow

Right Rear Speaker -

11 Brown

Ground

-


"Power Amplifier B"
1 Red / Yellow

Fused B(+)

2 Red / Yellow

Power Top status signal

(Roadster only)

3 Dark Green / White

Wheel Speed sensor output

4 Black / Red

Left Rear Speaker Ground

- - 5 Blue / Red

Amplified Right Rear Speaker +

6 Pink

Amplified Left Rear Speaker +

7 Black / Pink

Amplified Right Door Speaker +

8 Black / Blue

Amplified Left Door Speaker +

9 Red / Yellow

Fused B(+)

10 - 11 - 12 Blue

Left Rear Speaker Supply Voltage

13 Red / Yellow

Right Rear Speaker Ground

14 Violet

Right Rear Speaker Supply Voltage

15 Black / Yellow

Amplified Right Rear Speaker -

16 Dark Green

Amplified Left Rear Speaker -

17 Brown / Yellow

Amplified Right Door Speaker -

18 Brown / Dark Green

Amplified Left Door Speaker -